Legalism is a term that Christians often toss around, but rarely define. Most people use the term to describe anyone with stricter standards then themselves. If we want to really understand what legalism is, and why it is dangerous, we must look at Jesusâ dealing with the Pharisees. Legalism is not simply to hold standards. Rather it is to replace Godâs standards with manmade rules and to then judge the spirituality of others by these rules. Listen to hear more about the problems with legalism.